Interactive Strength Inc. (TRNR) shares are experiencing a significant increase following the announcement of a partnership with Chuze Fitness. Chuze, a rapidly expanding fitness chain, has ordered CLMBR machines, a product of Interactive Strength, to be installed in four of its locations. This partnership has the potential to expand to all 60 Chuze locations, demonstrating the growing popularity of CLMBRs in the fitness industry.